Patent US3456769A successfully refreshed from Google Patents.
US3456769A
Expired / Lapsed
US
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Transit mixer discharge chute
Assignee: Challenge Cook Bros Inc
•
Filing: 1967-04-10
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Granted: 1969-07-22
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Evan S Prichard
- 👤 George A Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:54
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/42; B28C5/4203; B28C5/4234; B28C5/4244; B28C5/4248; B28C5/4251; B65; B65G; B65G11/00; B65G11/14; B65G11/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US817896A
Cited
US1144386A
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US1178326A
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US1510479A
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US2577328A
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US2713929A
Cited
US2808923A
Cited
US3053367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |